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scissor command

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This commit is contained in:
Alessandro Mauri 2024-12-15 22:29:07 +01:00
parent 6d8300f9d9
commit bca29c537c
6 changed files with 83 additions and 63 deletions
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48
src/ugui_text.c3
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@ -1,54 +1,6 @@
module ugui;
import std::io;
import std::ascii;
import grapheme;
<*
@require off != null
*>
fn Codepoint str_to_codepoint(char[] str, usz* off)
{
Codepoint cp;
isz b = grapheme::decode_utf8(str, str.len, &cp);
if (b == 0 || b > str.len) {
return 0;
}
*off = b;
return cp;
}
fn Rect! Ctx.get_text_bounds(&ctx, String text)
{
Rect text_bounds;
short line_height = (short)ctx.font.ascender - (short)ctx.font.descender;
short line_gap = (short)ctx.font.linegap;
text_bounds.h = line_height;
Glyph* gp;
// TODO: account for unicode codepoints
short line_len;
Codepoint cp;
usz off, x;
while ((cp = str_to_codepoint(text[off..], &x)) != 0) {
off += x;
bool n;
if (!ascii::is_cntrl((char)cp)) {
gp = ctx.font.get_glyph(cp)!;
line_len += gp.adv;
} else if (cp == '\n'){
text_bounds.h += line_height + line_gap;
line_len = 0;
} else {
continue;
}
if (line_len > text_bounds.w) {
text_bounds.w = line_len;
}
}
return text_bounds;
}
fn void! Ctx.text_unbounded(&ctx, String label, String text)
{